SOLUTION: Ken is 21 years younger than Laura. 3 years ago, Laura's age was 2 times Ken's age. How old is Ken now?

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Question 1095906: Ken is 21 years younger than Laura. 3 years ago, Laura's age was 2 times Ken's age. How old is Ken now?
Answer by josgarithmetic(39630) About Me  (Show Source):
You can put this solution on YOUR website!
k, Ken
L, Laura
system%28k=L-21%2C%28L-3%29=2%28k-3%29%29
-
L-3=2%28L-21-3%29
L-3=2L-48
-3%2B48=L
L=45
-
k=45-21
highlight%28k=24%29
-
-
and you also know L=45.